Sash-fastener.



G. D. JONES.

SASH PASTENER.

APPLIOATION FILED MAR. 10, 190$. RENEWED MAR. 11.1905.

ELN.

II M

PATENTED MAY 2, 1905.

STATES lTE Patented May 2, 1905.

GEORGE D. JONES, OF CHICAGO, ILLINOIS.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 788,7 75, dat d May 2, 1905.

Application filed March 10, 1904. Renewed March 11, 1905. Serial No. 249,650.

To all whom it may concern.-

Be it known that I, GEORGE I). J ONES, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Sash-Fasteners, of which the following is a specification.

This invention relates to sash-fasteners, and has for its particular object to provide means for securely locking one sash of a partly open or closed window against the other in such manner as to provide an absolute protection against an attempt to open said Window from the outside or to enter the same without deliberately breaking the glass.

My invention affords a reliable means for the ventilation of sleeping and other rooms by permitting the windows thereof to be locked in partly-open position without danger of burglars entering the same and further serves by drawing the sashes of a window tightly together to prevent the noise and jar incident to the rattling of the sashes in the casing.

With these and other objects in view my invention consists in the combination and arrangement of parts, as willbe hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claim, it being understood that changes in the form, proportion, size,

and minor details may be made within the" scope of the claim without departing from the spirit or sacrificing any of the advantages of this invention.

In the drawings, Figure 1 shows in elevation a window equipped with my improved fastener. Fig. 2 shows a vertical section of such window with the two sashes locked together. Fig. 3 shows a horizontal cross-section of the window and fastener, taken on the line a a of Fig. 2. Figs. 4 and 5 show, respectively, in perspective an apertured plate and a lock-bolt or cam-rod, which forms part of my fastener.

Like characters of reference designate corresponding parts throughout the views.

In the drawings, 1 designates the lower, and 2 the upper, sash of a window. Secured, as shown, on the upper edge of the lower sash is a casing 3, having in opposite sides thereof the openings 4 and 5, through which project the ends of the lock-bolt or cam-rod 6, provided with a bent portion or handle 7 at one end thereof and with an outstanding portion or lip 8 at the other. Intermediate of the handle and lip the rod 6 is provided with a rib or flange 9, one side of which is adapted to engage one end'of the spring 10, surrounding said rod, and the other side to contact with one side of the interior of the casing 3 to limit the inward. movement of the rod 6 under the action of said spring.

Vertically supported on the upper sash at the side or middle thereof and securely attached thereto is a plate 11, having apertures 12 therein. The upper edges 13 of these apertures are straight and lie in a plane at right angles to the surface of the plate. The lower edges 14 are preferably curved and on the front of the plate slope downward, as shown at 14, to permit the inner end of the springpressed rod 6 to automatically slide out of such apertures when the lower sash is low cred or the upper one raised. The apertures 12 are provided at the back of the plate with cam or beveled surfaces 15, against which the vlip 8 engages when the inner end of the rod is turned to the right 01' left within one of the apertures.

The operation of my fastener is as follows: The sashes having been brought into the position desired, either with the window partly open or entirely closed and with the inner end of the rod 6 extending within one of the apertures 12, the said rod is twisted or revolved to the right or left by means of the handle 7 through an angle of approximately ninety degrees, whereby the outstanding portion or lip will turn behind and ride up on the cam or beveled surfaces 15 and draw the windows firmly together, making it impossible to unlock the fastener by means of a knife or strip of metal inserted from the outside. All attempt to open the window by raising the lower sash or lowering the upper one will be me vented by the contact of the inner end of the bolt with the straight upper edge of one of the apertures 12.

The windows may be opened or closed from the inside by drawing the rod 6 outward out of engagement with the plate 11, although this is not necessary, as above stated, in order to lower the lower sash or raise the upper one, as the inner end of the rod 6 will then automatically release itself from engagement with the apertures 12.

Having now described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

A sash-fastener consisting of a plate adapted to be vertically mounted upon the inner face of a window-sash and provided with a plurality of apertures formed therein, each of said apertures being formed with a plane inclined to the face of the plate and the vertical edges provided with cam-surfaces, a bolt adapted the aperture upon an opening movement of either sash and upon the rotation of the bolt, the lip will engage the cam-surfaces to lock the sashes relative to each other.

GEO. D. JONES.

In presence of HARVEY J. GILL, EDITH J ONES. 

